Search Results - "Dust."

Dust is a major component of atmospheric aerosols – 75% of the global aerosol load. Natural and anthropogenic sources are listed, as well as dust research methods. According to different estimates, the average mineral dust load in the atmosphere ranges from 20 to 33 Tg, and the annual dust emission...

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Dust aerosols can influence climate change, the ecological environment, human health, etc. and are one of the most important factors causing global change. The specific contributions of dust events, gusts, and dust devils to dust emission remain unclear in many regions. In this study, we quantified...

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The problem of coal dust caused by the improvement of mine mechanization and intellectualization is becoming more and more serious. spray is widely used to treat coal dust problems in underground working faces. The coalescence process of dust mist can achieve coal dust settlement, and then alleviate...

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Magnetized charging technology, as a new type of coupling enhanced dust reduction technology, can effectively improve the poor efficiency of traditional wet water mist in capturing fine and difficult to infiltrate coal dust. This study adopts theoretical analysis and experimental methods to study th...

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The problem with using cyclone dust collectors is the insufficient degree of cleaning of small dusts. Therefore, it is necessary to introduce sequential post-cleaning to meet the requirements of the MAC. Usually, the calculation of the residual dust concentration is carried out on average, which d...

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Tianwen-3 Mars Sample Return Mission is scheduled for launch in 2028, with a return expected in ∼2030. Dust devils (DDs) play a crucial role in the thermal structure of the Martian atmospheric boundary layer. Additionally, the formation process of dust devil tracks (DDTs) is similar to th...

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This study proposes a turbulent air chamber control and dry purification collaborative control technology for dust removal as a solution to the dust pollution in the Yunshun fully mechanized excavation face 6307 of Dongtan Coal Mine. We compared the conditions of press-in ventilation and pressure-ex...

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Diffuse Galactic light (DGL) is starlight scattered by interstellar dust. In visible wavelengths, earlier studies observed DGL toward regions of low optical depth in high Galactic latitude, and show marginal consistency with a theoretical model assuming single scattering by dust grains. However, a m...

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Background: Iraq experienced a severe dust event that occurred in mid-May 2022, disrupting daily life with adverse health impacts. Objective: This study aims to investigate the triggering weather systems, and examine the variations in meteorological factors during the event with a specific focus on...

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Dust accumulation on Photovoltaic (PV) panels represents a major challenge for the operation of panels. There are several passive dust mitigation techniques, such as using a dust shield whose performance has been enhanced by integrating it with an air nozzle. The air exiting the nozzle acts as an ai...

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The research has been carried out on the contamination by finely dispersed dust of the air in urban territories during construction excavation works related to the formation of pits, trenches and so on in the areas of the occurrence of different types of the dispersed soil masses. The principles of...

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This work presents a comparative design of the sensing elements for the Lunar Dust GRID System (LD GRIDS), a dust analyser conceived to measure charged particles on future lunar missions. LD GRIDS replaces traditional electrodes with continuous conductive grids, i.e., the sensing elements of the ins...

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Large quantity of asynchronous motors work in heavily dusted environments. On the end-winding insulation of the motors to 55 kW operating in the mining and smelting enterprise there is a 3 cm dust layer, which may lead to the asynchronous motor end-winding local overheat and consequent early breakdo...

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Due to the gradual realization of mechanization and intelligence in mine excavation technology, the problem of dust pollution in the comprehensive excavation face has become increasingly serious. In order to study the dust fall law of the spray system outside the excavation face under different arra...

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<p><em>A novel experimental method for power efficiency loss is presented in this paper. It is used to quantitatively determine the impact of dust deposition on the PV power generation panel. To determine the selection range of unknown parameters in the </em><em>experiment pr...

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